In 2012, Intel will update its processor lineup up to performance 2 tiers with new models based on the spanking new 22 nm "Ivy Bridge" silicon, which will increase performance over the current generation, and bring some new features to the table. In late November, a list of desktop Core i5/i7 models could be compiled, which were later confirmed on roadmap slides. CPU World compiled retail channel pricing of several of those Core i5/i7 "Ivy Bridge" chips. The prices look to be more or less consistent with current "Sandy Bridge" Core processors, which those chips are bound to replace. The Core i7-3770K, for example, which will replace the Core i7-2600K, will be similarly priced to it.

It also varies for motherboard models and manufacturers.
I wouldn't worry until things have been explained better though... at this point the only difference in having a Sandy Bridge mobo with an Ivy bridge CPU should be the lack of USB 3.0 native support and PCIe 3.0 native support

At this point, I figure it's gotta be partly a marketing/business decision though the specifics of how and why not advertising 4Ghz plus procs is beneficial to them are not exactly clear to me.

I was just thinking about that again this morning after that Northwood thread; how top end factory clock speed is virtually unchanged in the last decade. We know architecture matters much more but still...

A 3570K and a new 7000 series GPU seem like a nice upgrade from my i7 920 and 5870, only one problem. I don't need any more power then what I got! Until the console's get into there next generation the "console ports" we get won't stress the parts I have. Still I got a hole in my pocket and I wanna burn it!

It also varies for motherboard models and manufacturers.
I wouldn't worry until things have been explained better though... at this point the only difference in having a Sandy Bridge mobo with an Ivy bridge CPU should be the lack of USB 3.0 native support and PCIe 3.0 native support